Tossing Black Hole Spin Axes

Understand

The detection of double black hole (BH+BH) mergers provides a unique possibility to understand their physical properties and origin.

• To date, the LIGO-Virgo-KAGRA network of high-frequency gravitational wave observatories have announced the detection of more than 85 BH+BH merger events (Abbott et al.
• 2022a).
• An important diagnostic feature that can be extracted from the data is the distribution of effective inspiral spins of the BHs.